Embed Size (px)
Citation preview
Quick Start GuideLIQ-QSG-499ACL-02, Rev K
July 2017
Rosemount™ 499ACL-02
Total Chlorine Sensor
Safety information
CAUTION!SENSOR/PROCESS APPLICATION COMPATIBILITY
The wetted sensor material may not be compatible with process composition and operating conditions. Application compatibility isentirely your responsibility.
CAUTION!EQUIPMENT DAMAGE
Do not exceed pressure and temperature specifications.
Pressure: 65 psig (549 kPa abs) max. Temperature: 32 to 122 °F (0 to 50 °C)
Contents
Chapter 1 Plan ..................................................................................................................................11.1 Unpacking and inspection .............................................................................................................. 11.2 Product description ........................................................................................................................11.3 Specifications .................................................................................................................................1
Chapter 2 Install ...............................................................................................................................3
Chapter 3 Wire .................................................................................................................................5
Chapter 4 Calibrate ........................................................................................................................ 134.1 Zero point calibration ...................................................................................................................134.2 Full scale calibration ..................................................................................................................... 13
Chapter 5 Maintenance .................................................................................................................. 155.1 Cleaning the membrane ...............................................................................................................155.2 Replacing the electrolyte solution and membrane ....................................................................... 15
Chapter 6 Accessories .................................................................................................................... 17
Contents
Quick Start Guide i
Contents
ii Rosemount 499ACL-02
1 Plan
1.1 Unpacking and inspection1. Inspect the shipping container. If it is damaged, contact the shipper immediately for
instructions.
2. Save the box.
3. If there is no apparent damage, unpack the container. Be sure all items shown on thepacking list are present. If items are missing, notify Rosemount immediately.
1.2 Product description
Rosemount 499ACL-02 Sensor PartsFigure 1-1:
A. Membrane retainerB. Membrane assemblyC. O-ringD. CathodeE. Electrolyte fill plug (wrap with pipe tape)F. Pressure equalizing portG. Sensor cable (integral cable shown)
1.3 Specifications
Sensor specificationsTable 1-1:
Physical characteristics Specifications
Pressure 0 to 65 psig (101 to 549 kPa abs)
Temperature (operating) 0 to 50 °C (32 to 122 °F)
Process connection 1 in. MNPT
Plan
Quick Start Guide 1
Sensor specifications (continued)Table 1-1:
Physical characteristics Specifications
Wetted parts Noryl®(1), Viton®(2), and silicone
Cathode Gold
Process connections Sensor must be used in flow cell PN 24091-01
(1) Noryl is a registered trademark of General Electric.
(2) Viton is a registered trademark of DuPont Performance Elastomers.
Plan
2 Rosemount 499ACL-02
2 Install
The sensor is intended for use only in the Rosemount TCL sample conditioning system fortotal chlorine. Consult the instruction manual for the Rosemount TCL sample conditioningsystem for more information.
Install
Quick Start Guide 3
Install
4 Rosemount 499ACL-02
3 Wire
NOTICE
For additional wiring information on this product, including sensor combinations not shownhere, please refer to the Liquid Transmitter Wiring Diagrams.
Rosemount 499ACL-02-54 Sensor Wiring to Rosemount 1056 and 56Transmitters
Figure 3-1:
Wire
Quick Start Guide 5
Rosemount 499ACL-02-54-60/499ACL-02-54-VP Sensor Wiring toRosemount 1056 and 56 Transmitters
Figure 3-2:
Wire
6 Rosemount 499ACL-02
Rosemount 499ACL-02-54 Sensor Wiring to Rosemount 5081 transmitterFigure 3-3:
Wire
Quick Start Guide 7
Rosemount 499ACL-02-54-60/499ACL-02-54-VP Sensor Wiring toRosemount 5081 Transmitter
Figure 3-4:
Wire
8 Rosemount 499ACL-02
Rosemount 499ACL-02-54 Sensor Wiring to Rosemount 1066 TransmitterFigure 3-5:
Wire
Quick Start Guide 9
Rosemount 499ACL-02-54-60/499ACL-02-54-VP Sensor Wiring toRosemount 1066 Transmitter
Figure 3-6:
Rosemount 499ACL-02-54-VP Sensor Pin-out Diagram (Top View ofConnector End of Sensor)
Figure 3-7:
Wire
10 Rosemount 499ACL-02
When making a connection through a junction box (PN 23550-00), wire point-to-point.
NOTICE
Use a wire nut and pigtail (included) when connecting several wires to the same terminal.
Wire
Quick Start Guide 11
Wire
12 Rosemount 499ACL-02
4 Calibrate
4.1 Zero point calibrationThe sample conditioning system converts total chlorine into iodine, which the Rosemount499ACL-02 sensor measures. Even in the absence of iodine, the Rosemount 499ACL-02sensor generates a small signal called the zero current. Failure to correct for the zerocurrent can produce a bias, particularly if the total chlorine concentration is small (<0.2ppm). Zero the sensor when it is first placed in service and every time the fill solution ischanged.To zero the sensor:
Procedure
1. Pour a cup of deionized or bottled water.
2. Place the sensor in the water.
3. Wait until the sensor current has reached a stable low value (at least two hours).
4. Follow the transmitter prompts for zeroing the sensor.
The zero current should be between -10 and +50 nA. For more information, refer to theRosemount TCL Manual.
4.2 Full scale calibrationBecause stable dilute chlorine standards are not available, the sensor must be calibratedagainst the results of a laboratory test run on a grab sample of the process liquid.
1. Place the sensor in the flow cell inside the TCL.
2. Start the sample and reagent flow.
3. Adjust the concentration so that it is near the upper end of the operating range.
4. Wait for the readings to stabilize.
5. Follow the transmitter prompts to complete the calibration.
6. After calibration, go to the Diagnostics menu and check the sensitivity.
The sensitivity should be between 900 and 1,200 nA/ppm. For more information, refer tothe Rosemount TCL manual.
Calibrate
Quick Start Guide 13
Calibrate
14 Rosemount 499ACL-02
5 Maintenance
When used in clean water, the total chlorine sensor requires little maintenance. Generally,the sensor needs maintenance when the response becomes sluggish or noisy or whenreadings drift following calibration. Maintenance frequency is best determined byexperience. Sensors used in dirty water require more frequent maintenance andcalibration. However, if experience shows that the sensor is holding calibration and notdrifting appreciably between calibration intervals, the maintenance interval can beextended.
WARNING!
PRESSURIZED SPRAY INJURYBefore removing the sensor, be absolutely certain that the process pressure is reduced to0 psig and the process temperature is lowered to a safe level!
5.1 Cleaning the membraneKeep the membrane clean. Clean the membrane with water sprayed from a wash bottle. Use a soft tissue to gently wipe the membrane.
5.2 Replacing the electrolyte solution andmembrane
WARNING!
HARMFUL SUBSTANCEFill solution may cause irritation. May be harmful if swallowed. Read and follow manual.
Procedure
1. Unscrew the membrane retainer.
2. Remove the membrane assembly and O-ring.
See Figure 1-1.
3. Hold the sensor over a container with the cathode pointing down.
4. Remove the fill plug.
5. Allow the electrolyte solution to drain out.
6. Remove the old pipe tape from the plug.
7. Wrap the plug with one or two turns of pipe tape..
8. Prepare a new membrane.
Maintenance
Quick Start Guide 15
a. Hold the membrane assembly with the cup formed by the membrane andmembrane holder pointing up.
b. Fill the cup with electrolyte solution.
9. Hold the sensor at about a 45° angle with the cathode end pointing up.
10. Add electrolyte solution through the fill hole until the liquid overflows.
11. Tap the sensor near the threads to release trapped air bubbles.
12. Add more electrolyte solution if necessary.
13. Place the fill plug in the electrolyte port and begin screwing it in.
14. After several threads have engaged, rotate the sensor so that the cathode ispointing up and continue tightening the fill plug.
Do not overtighten.
15. Place a new O-ring in the groove around the cathode post.
16. Cover the holes at the base of the cathode stem with several drops of electrolytesolution.
17. Insert a small blunt probe, like a toothpick with the end cut off, through the pressureequalizing port.
See Figure 1-1.
CAUTION!EQUIPMENT DAMAGE
Do not use a sharp probe. It will puncture the bladder and destroy the sensor.
18. Gently press the probe against the bladder several times to force liquid through theholes at the base of the cathode stem. Keep pressing the bladder until no air bubblescan be seen leaving the holes. Be sure the holes remain covered with electrolytesolution.
19. Place a drop of electrolyte solution on the cathode; then place the membraneassembly over the cathode.
20. Screw the membrane retainer in place.
The sensor may require several hours operating at the polarizing voltage toequilibrate after the electrolyte solution has been replenished.
Maintenance
16 Rosemount 499ACL-02
6 Accessories
Part # Description
33523-00 Electrolyte fill plug
9550094 O-ring, Viton 2-014
33521-00 Membrane retainer
23501-02 Total chlorine membrane assembly: includes one membrane assembly andone O-ring
23502-02 Total chlorine membrane kit: includes three membrane assemblies and three O-rings
9210438 Total chlorine sensor fill solution, 4 oz (120 mL)
Accessories
Quick Start Guide 17
Accessories
18 Rosemount 499ACL-02
Accessories
Quick Start Guide 19
LIQ-QSG-499ACL-02
Rev K
2017
Global HeadquartersEmerson Automation Solutions6021 Innovation BlvdShakopee, MN 55379, USA
+1 800 999 9307 or +1 952 906 8888
F +1 952 949 7001
[email protected]/RosemountLiquidAnalysisNORTH AMERICAEmerson Automation Solutions8200 Market BlvdChanhassen, MN 55317
Toll Free +1 800 999 9307
F +1 952 949 7001
[email protected]/RosemountLiquidAnalysis
EUROPEEmerson Automation SolutionsNeuhofstrasse 19a P.O. Box 1046CH-6340 BaarSwitzerland
T + 41 (0) 41 768 6111
F + 41 (0) 41 768 6300
[email protected]/RosemountLiquidAnalysis
MIDDLE EAST AND AFRICAEmerson Automation SolutionsEmerson FZEJebel Ali Free ZoneDubai, United Arab Emirates, P.O. Box 17033
T +971 4 811 8100
F +971 4 886 5465
[email protected]/RosemountLiquidAnalysis
ASIA-PACIFICEmerson Automation Solutions1 Pandan CrescentSingapore 128461Singapore
T +65 777 8211
F +65 777 0947
[email protected]/RosemountLiquidAnalysis
Linkedin.com/company/Emerson-Automation-Solutions
twitter.com/rosemount_news
Facebook.com/Rosemount
youtube.com/RosemountMeasurement
google.com/+RosemountMeasurement
AnalyticExpert.com
©2017 Emerson Automation Solutions. All rights reserved.
The Emerson logo is a trademark and service mark of Emerson Electric Co. Rosemount is amark of one of the Emerson family of companies. All other marks are the property of theirrespective owners. The contents of this publication are presented for informationpurposes only, and, while effort has been made to ensure their accuracy, they are not tobe construed as warranties or guarantees, expressed or implied, regarding the products orservices described herein or their use or applicability. All sales are governed by our termsand conditions, which are available on request. We reserve the right to modify or improvethe designs or specifications of our products at any time without notice.
